<template>
  <div>
    <!--面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图区域-->
    <el-card >
      <!--搜索与添加区域-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList" ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true" >添加用户</el-button>
        </el-col>
      </el-row>
      <!--用户列表区域-->
      <el-table :data="userList" border stripe >
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="头像">
          <template slot-scope="joe" >
            <img class="avatarImg" :src="joe.row.avatar"/>
          </template>
        </el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="home_id" prop="homeId"></el-table-column>
        <el-table-column label="角色" >
          <template slot-scope="roles" >
            <span v-for="role in roles.row.roles" v-bind:key="role.id">{{role.name}}</span>
          </template>
        </el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.status" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="joy">
            <!--修改按钮-->
            <el-tooltip effect="dark" content="修改" placement="top" :enterable="false">
              <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(joy.row.id)"></el-button>
            </el-tooltip>
            <!--删除按钮-->
            <el-tooltip effect="dark" content="删除" placement="top" :enterable="false">
              <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(joy.row.id)"></el-button>
            </el-tooltip>
            <!--分配权限角色-->
            <el-tooltip effect="dark" content="分配权限" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(joy.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!--分页区域-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.currentPage"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pageSize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!--添加用户对话框-->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%" @close="addDialogClosed">
      <!--内容主体区域-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="头像" prop="avatar">
          <el-input v-model="addForm.avatar"></el-input>
        </el-form-item>
        <el-form-item label="home_id" prop="homeId">
          <el-input v-model="addForm.homeId"></el-input>
        </el-form-item>
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
    </el-dialog>
    <!--修改用户对话框-->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="头像" prop="avatar">
          <el-input v-model="editForm.avatar"></el-input>
        </el-form-item>
        <el-form-item label="home_id" prop="homeId">
          <el-input v-model="editForm.homeId"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>
    </el-dialog>
    <!--分配角色的对话框-->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%" @click="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：<span v-for="role in userInfo.roles" v-bind:key="role.id">{{role.name}}</span></p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.name"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 自定义校验规则<邮箱>
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) return cb()
      cb(new Error('请输入合法的邮箱'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页码值
        currentPage: 1,
        // 当前每页显示多少条数据
        pageSize: 10
      },
      userList: [],
      total: 0,
      // 控制添加编辑用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '111111',
        email: '',
        avatar: 'https://img.tapimg.com/market/icons/fb0f68688966a72c8aa9a90c876e62fa_360.png?imageMogr2/auto-orient/strip',
        homeId: ''
      },
      // 添加用户表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 2, max: 20, message: '用户名长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '用户密码长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        avatar: [
          { required: true, message: '请输入用户头像', trigger: 'blur' }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户对象
      editForm: {},
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        avatar: [
          { required: true, message: '请输入用户头像', trigger: 'blur' }
        ]
      },
      // 控制分配角色的对话框显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 全部角色的数据列表
      rolesList: [],
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const result = await this.$http.get('/user/users', { params: this.queryInfo })
      if (result.data.code !== 200) return this.$message.error('用户列表数据获取失败')
      this.userList = result.data.data.data
      this.total = result.data.data.total
    },
    // 监听pageSize改变
    handleSizeChange(newSize) {
      this.queryInfo.pageSize = newSize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.currentPage = newPage
      this.getUserList()
    },
    // 监听用户状态的改变
    async userStateChanged(userInfo) {
      const result = await this.$http.put(`/user/${userInfo.id}/state/${userInfo.status}`)
      if (result.data.code !== 200) {
        userInfo.status = !userInfo.status
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功！')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return false
        // 可以添加用户的网络请求
        const result = await this.$http.post('/user/save', this.addForm)
        if (result.data.code !== 200) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 刷新列表
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      const result = await this.$http.get('/user/getUser/' + id)
      if (result.data.code !== 200) {
        return this.$message.error('查询到用户信息失败')
      }
      this.editForm = result.data.data
      // 显示对话框
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息的表单提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return false
        // 发起修改用户的数据请求
        const result = await this.$http.put('/user/updateUser/' + this.editForm.id, {
          email: this.editForm.email,
          avatar: this.editForm.avatar,
          homeId: this.editForm.homeId
        })
        if (result.data.code !== 200) {
          return this.$message.error('用户信息更新失败！')
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新列表
        this.getUserList()
        // 提示成功
        return this.$message.success('用户信息更新成功！')
      })
    },
    // 根据id删除对应的用户信息
    async removeUserById(id) {
      // 弹框询问是否删除用户
      const result = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除，则返回字符串 confirm
      // 如果用户取消删除，则返回字符串 cancel
      if (result !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const res = await this.$http.delete('/user/delete/' + id)
      if (res.data.code !== 200) {
        return this.$message.error('删除用户失败！')
      }
      this.$message.success('删除用户成功！')
      this.getUserList()
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前，获取所有角色的列表
      const result = await this.$http.get('/role/roles')
      if (result.data.data.code !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolesList = result.data.data.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮触发分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      const result = await this.$http.put(`/user/updateRole/${this.userInfo.id}/${this.selectedRoleId}`)
      if (result.data.code !== 200) {
        return this.$message.error('分配角色失败！')
      }
      this.$message.success('分配角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
.avatarImg{
  width: 30px;
}
</style>
